Millions of viewers on social media platforms are participating in what is known as the 'mukbang' trend.

Researchers found that users in non-English-speaking countries were recommended 60% more 'regrettable' videos.

TikTok is believed to have one billion users worldwide including more than 100 million in the US, and is especially popular with young smartphone users.

Police say investigations are confidential and cannot be arbitrarily revealed through such recordings.